Wilkerson, M. Scott , Wilkerson, M. Beth & Marshak, Stephhen <br/><br/>
Geotours Workbook: A Guide for Exploring & Creating Projects using Google Earth 
By M. Scott Wilkerson, M. Beth Wilkerson & Stephen Marshak 
 - New York  W.W. Norton & Company  2012 
 - vii, 161 pages, 28 cm. 
<br/><br/> includes credits & appendix 
<br/><br/><label>ISBN: </label>978-0-393-91891-5 
<br/><br/><label>Dewey Class. No.: </label>551 W63